Personal opinion don't do that. You have a good gun now and you are talking about a job that would cost as much to do as just getting a new gun with no guarantees it will shoot as good as what you have right now. Is your 44 clean and in good shooting shape. If it is leave it alone.I have a asm copy of an 1851 navy it is .44 cal I am wondering if I can take a new barrel and cylinder in .36 cal and put on my .44 frame. Or how about a 1861 .36 cal on a 1851 frame isn't the 1861 just a slimed down version of the 51?